To begin with I will start by saying i don't know that much about computing so i wont get technical, I will simply say that:
Installation. Simple enough, I'm no computer expert and I managed it. Just plug it into your mother board,(where you old one was if you are upgrading) connect it to the power supply, install your drivers and away you go.
Performance. I can run Arma 2 (which is probably one of, if not the most graphically demanding games on the market at the moment) with maxed out graphics and AAx4 at 1920 x 1080 without any issues. So it should handle any game you throw at it for a couple of years.
Value for money. Amazon are the cheapest seller by far, so no need to shop around. Even specialist computer parts suppliers didn't come close on price.
To sum up, excellent graphics card, I would defiantly recommend it.